JP2012212006A - Information display panel and transportation device including information display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display panel capable of producing an effect of indirect light leaking from the outer peripheral part of a character and a picture when a light source is lit, or an effect obtained by combining the indirect light with direct light.SOLUTION: An information display panel 11 illuminated through a back surface by a light source 9 includes: a light transmissive support 1; a first reflection layer 2 and a first light-shielding layer 3 which are positioned in an observer 10 side of the information display panel 11 and are sequentially stacked in one surface side of the light transmissive support 1; and a second reflection layer 4 and a second light-shielding layer 5 which are positioned in a light source 9 side of the light transmissive support 1 and are sequentially stacked in the other surface side thereof, the first reflection layer 2 is arranged so as to have a size including a region corresponding to a position of an opening 5a provided in the second light-shielding layer 5 in an extending direction of the one surface and the other surface, the first light-shielding layer 3 is formed so as to be smaller than the first reflection layer 3 so that a part of the end of the first reflection layer 2 exposes in the observer 10 side, and the diffuse reflectance of the second reflection layer 4 is lower than that of the first reflection layer 2.

Description

  The present invention relates to an information display panel having a printed layer on both sides of a flat light-transmitting support, and in particular, an information display having a printed layer in which a light-shielding layer having a light-shielding property and a light-reflecting reflective layer are combined. The present invention relates to a transportation device including a panel and an information display panel thereof.

  In the information display panel of Patent Document 1 as an example of the prior art, a reflective layer and a light-shielding property (coloring property) are provided in a portion corresponding to a character / pattern on the surface of an observer side of a light-transmitting substrate. The layers it has are stacked in order. In addition, a layer having reflectivity and a layer having light shielding properties are sequentially laminated on a portion of the other surface of the base material that does not correspond to the character / pattern.

  According to the configuration of the information display panel of Patent Document 1, when the lamp arranged behind the other surface side of the information display panel is not lit, the light is blocked (colored) on the viewer side by external light. The layer is visually recognized as a character / picture portion, and the reflective layer on the other surface side is visually recognized as a ground color portion other than the character / pattern portion. In addition, when the lamp is lit, the light of the lamp is irradiated from the back side, so that the light that diffuses and reflects the reflective layer on the back side causes indirect light to spread around the outer periphery of the character / picture part. Is viewed three-dimensionally.

  However, in the technique of Patent Document 1, it is difficult to make the ground color of the reflective layer visually recognized as a part other than the character / picture part when the lamp is not lit, considering the light reflectivity as a dark color system. For this reason, it has been difficult to make a distinction by adding a color difference to the ground color of a layer having a light shielding property (coloring property) that is visually recognized as a character / pattern part. Therefore, when the lamp is not lit, the position difference in the front-rear direction between the reflective layer that is visually recognized as a part other than the character / design part and the light-shielding layer (coloring property) that is visually recognized as the character / pattern part. It was difficult to visually recognize the characters and design parts in three dimensions.

Japanese Patent No. 3351784

  The present invention provides an information display panel that allows a portion such as a character or a pattern to be viewed three-dimensionally with respect to other portions even when the rear light source is not lit, and a transportation device including the information display panel. This is the issue.

The present invention has the following configuration in order to solve the above problems.
The invention described in claim 1
An information display panel illuminated from the back by a light source,
A light-transmissive support, a first reflective layer and a first light-shielding layer, which are sequentially laminated on one surface side of the light-transmissive support located on the viewer side of the information display panel, and the light transmission A second reflective layer and a second light-shielding layer, which are sequentially laminated on the other surface side located on the light source side of the conductive support,
In the extending direction of the one surface and the other surface, the first reflective layer is arranged in a size including a region corresponding to the position of the opening provided in the second light shielding layer. ,
The first light-shielding layer is formed smaller than the first reflective layer so as to expose a part of an end of the first reflective layer to the viewer side;
The diffuse reflectance of the second reflective layer is configured to be lower than the diffuse reflectance of the first reflective layer.
An information display panel characterized by that.

The invention described in claim 2
The information display panel according to claim 1, wherein the second reflective layer has a diffuse reflectance of 10% to 40%.

The invention according to claim 3
The first light-shielding layer and the second light-shielding layer partially overlap in the extending direction, and the width in the extending direction of the overlapping portion of the first light-shielding layer and the second light-shielding layer L1, and when the thickness of the light transmissive support in the stacking direction of the layers relative to the surfaces is T1,
0 ≦ L1 ≦ 5 × T1
The information display panel according to claim 1, wherein:

The invention according to claim 4
The first reflective layer is formed larger than the first light shielding layer in the extending direction, and an end of the first reflective layer extends from an end of the first light shielding layer in the extending direction. When the width of the protruding portion is L2, and the diameter of the smallest circle that can surround the design displayed using the first light shielding layer is R,
0.0025 × R ≦ L2 ≦ 0.05 × R
The information display panel according to claim 1, wherein:

According to a fifth aspect of the invention, the first light shielding layer and the second light shielding layer do not overlap in the extending direction, and the first reflective layer and the second light shielding layer are not extended. Partly overlaps in the current direction, and the distance between the end of the first light-shielding layer and the end of the second light-shielding layer in the extending direction is L3, and the first light-shielding layer and the first reflection The width in the extending direction of the portion overlapping with the layer is L4, the thickness of the light transmissive support in the stacking direction of each layer with respect to each surface is T1, and the design to be displayed using the first light shielding layer is enclosed When the diameter of the smallest possible circle is R,
L3 ≦ 2 × T1
L3 ≦ L4
L4 ≦ 0.05 × R
The information display panel according to claim 1, wherein:

The invention described in claim 6
6. The information display panel according to claim 1, wherein the total light transmittance of the second light-shielding layer is 0% or more and 20% or less.

The invention described in claim 7
7. The information display panel according to claim 1, wherein a diffuse reflectance of the first reflective layer is 20% or more and 90% or less.

The invention according to claim 8 provides:
8. The information display panel according to claim 1, wherein the total light transmittance of the first reflective layer is 10% or more and 80% or less.

The invention according to claim 9 is:
9. The information display panel according to claim 1, wherein the total light transmittance of the first light-shielding layer is 0% or more and 20% or less.

The invention according to claim 10 is:
A chromatic light-transmitting colored layer having a total light transmittance of 50% or more so as to be located at a portion corresponding to the opening in the extending direction is further on the light source side of the second light shielding layer. The information display panel according to claim 1, wherein the information display panel is laminated.

The invention according to claim 11
A surface coat layer is further laminated on the viewer side of the first light shielding layer in a size corresponding to the whole of the one surface in the extending direction, and the surface coat layer has a total light transmittance. The information display panel according to claim 1, wherein the information display panel is 70% or more.

The invention according to claim 12
The information display panel according to claim 11, wherein the surface coat layer has a diffuse reflectance of 5% to 30%.

The invention according to claim 13
The information display panel according to any one of claims 11 to 12, wherein the surface coat layer has a pencil hardness of HB or more.

The invention according to claim 14
A back coat layer having a size corresponding to the whole of the other face in the extending direction is further laminated on the most light source side of the other face, and the back coat layer has a total light transmittance of 70%. 14. The information display panel according to claim 1, wherein the information display panel is as described above.

The invention according to claim 15 is:
The information display panel according to claim 14, wherein the back coat layer has a pencil hardness of HB or more.

The invention described in claim 16
The light-transmitting support is a resin selected from polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile / styrene copolymer. An information display panel according to any one of claims 1 to 15.

The invention described in claim 17
The information display panel according to claim 1, wherein the light transmissive support is a resin having a haze value of 12% or more.

The invention described in claim 18
The light transmissive support includes a light transmissive layer and a light diffusing layer, and the light transmissive layer is polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile. The information display panel according to any one of claims 1 to 15, wherein the information display panel is any resin of a styrene copolymer, and the light diffusion layer is a resin having a haze value of 12% or more. .

The invention according to claim 19 is
19. The information display panel according to claim 1, wherein a thickness of the light transmissive support is in a range of 0.05 mm to 5 mm.

The invention according to claim 20 provides
The information display panel according to claim 1, wherein the light source is a surface light source including an edge light type light source and a light guide plate.

The invention according to claim 21
The information display panel according to claim 1, wherein the light source is an LED light source.

The invention described in claim 22
A transportation device comprising the information display panel according to any one of claims 1 to 21.

The information display panel of the present invention has a structure in which a light-shielding layer having characters / designs and a reflective layer capable of decorating characters / designs are laminated on the surface of the viewer on the light-transmitting substrate. In addition, the three-dimensional effect due to the pseudo-shade is produced by the different areas of the light shielding layer and the reflective layer. In addition, the base and light source side reflection layer are both light-transmitting in the base portion without characters or pictures, so that when viewed from the viewer side, the dark light-shielding layer on the light source side is visible through them. can do. The above effects can be obtained both when the light source arranged behind the information display panel is lit and when it is not lit. can do.
Furthermore, when the light source arranged behind the information display panel is turned on, the light incident from the light source leaks out as indirect light from the outer periphery of the light-shielding layer on the viewer side having the character / picture, so that the three-dimensional character / picture It has the effect of making the feeling even stronger and displaying it beautifully.

It is sectional drawing of 1st embodiment of the information display panel of this invention. It is sectional drawing of 2nd embodiment of the information display panel of this invention. It is the top view which looked at the information display panel of this invention from the observer side, Comprising: It is a schematic diagram which shows the arrangement | positioning relationship of the minimum circle which can surround the 1st light shielding layer. It is the top view which looked at 1st embodiment of the information display panel of this invention from the observer side. It is the top view which looked at 2nd embodiment of the information display panel of this invention from the observer side.

  Exemplary embodiments of an information display panel according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a cross-sectional view of an information display panel 11 according to the first embodiment of the present invention.
In the information display panel 11, the first reflective layer 2, the first light shielding layer 3, and the surface coat layer 7 are sequentially laminated on one surface side of the light transmissive support 1, and the other side of the light transmissive support 1. A second reflective layer 4, a second light shielding layer 5, a light transmissive colored layer 6, and a back surface coating layer 8 are laminated on the surface side. A light source 9 is disposed on the other surface side of the light transmissive support 1, and visual observation is performed from the viewer 10 side.

  The light-transmitting support 1 can be selected from any of three types of configurations: only a transparent resin, only a diffusible resin, and a laminate of a transparent resin layer and a diffusible resin layer.

When the transparent substrate 1 is composed of only transparent resin, polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polystyrene, methacryl / styrene copolymer, acrylonitrile / styrene copolymer, polymethyl methacrylate or acrylic are used. can do.
The thickness of the light transmissive support 1 at this time is preferably 0.05 mm or more because workability in a process of forming a light shielding layer and a reflection layer, which will be described later, is required, and when incorporated in an information display device casing It is preferably 5 mm or less in order not to be restricted by space. Further, if the transparent resin is used alone, the loss of the amount of light when the light from the light source 9 passes through the light-transmissive support 1 can be reduced, so that characters and designs can be displayed brighter when the light source 9 is turned on. .
Moreover, it is preferable that the haze value of the transparent support body 1 at this time is 12% or more. When the haze value is less than 12%, there is an adverse effect that the luminance of the indirect light is lowered because the light that enters the light-transmitting support and diffuses and reflects and passes through the region outside the first light shielding layer is reduced. Because.

  When the light-transmitting support 1 is composed only of a diffusible resin, it is a polycarbonate, polystyrene, methacryl / styrene copolymer, or acrylic that has a spherical or amorphous shape and contains organic or inorganic light diffusing fine particles. An organic resin containing at least one of them can be used. The thickness of the light transmissive support 1 at this time is preferably 0.05 mm or more because workability in a process of forming a light shielding layer and a reflection layer, which will be described later, is required, and when incorporated in an information display device casing It is preferably 5 mm or less in order not to be restricted by space. Further, by constituting only the diffusible resin, a part of the direct incident light from the light source 9 is scattered by the diffusible resin, and the observer 10 is seen from the periphery of the first reflective layer 2 and the first light shielding layer 3. In order to come out to the side, the brightness of indirect light can be increased.

When the light-transmissive support 1 has a laminated structure of a transparent resin layer and a diffusible resin layer, the transparent resin layer includes polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polystyrene, methacryl / styrene copolymer, acrylonitrile / Styrene copolymer, polymethyl methacrylate or acrylic, polycarbonate, polystyrene, methacryl / styrene copolymer containing light diffusing fine particles consisting of spherical or amorphous and organic or inorganic in the diffusible resin layer, An organic resin containing at least one of acrylics can be used.
The thickness of the light transmissive support 1 at this time is preferably 0.05 mm or more because workability in a process of forming a light shielding layer and a reflective layer, which will be described later, is required. 5 mm or less is preferable in order not to be subject to physical restrictions. In addition, because of the configuration including the diffusible resin layer, part of the direct incident light from the light source 9 is scattered by the diffusible resin layer, and from the periphery of the first reflective layer 2 and the first light shielding layer 3. In order to come out to the observer 10 side, the brightness | luminance of indirect light can be raised.
The order of arrangement of the transparent resin layer and the diffusible resin layer at this time, that is, which is arranged on the observer 10 side and which is arranged on the light source 9 side may be either.

The first reflective layer 2 is provided on one surface of the light transmissive support 1 (the surface on the side of the observer 10).
The first reflective layer 2 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  Although it is desirable to use white ink for the first reflective layer 2, it is not limited to white ink as long as it has a light diffuse reflection effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, a reflective effect will come out easily. When the light source 9 is turned on, the light reflected by the first reflective layer 2 appears to leak to the outer periphery of the first reflective layer 2. In addition, a portion of the first reflective layer 2 that protrudes from the first light shielding layer 3 (described later) is pseudo-recognized by the observer 10 as a shadow of the first light shielding layer 3, and feels more three-dimensional. There is an effect to make.

A first light shielding layer 3 is laminated on the first reflective layer 2 on one surface of the light transmissive support 1.
The first light shielding layer 3 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  Although it is desirable to use black ink for the first light shielding layer 3, the first light shielding layer 3 is not limited to black ink as long as it has a light shielding effect of light from the light source 9. For example, it is possible to dispose light-shielding ink on the light source 9 side and to laminate ink without light-shielding property on the ink (observer 10 side). Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, the light-shielding effect will come out easily. When the light source 9 is turned on, the light that has not been reflected by the first reflection layer 2 and is transmitted is blocked by the first light blocking layer 3, and the portion of the first light blocking layer 3 is visually recognized as dark. Further, the first light shielding layer 3 and the second light shielding layer 5 may overlap in a certain range (described later). This is because even when the positional relationship between the first light shielding layer 2 and the second light shielding layer 5 is shifted when the information display panel 11 is created by screen printing or the like, the direct light is directly blocked when the light source 9 is turned on. There is an effect of preventing the stereoscopic effect from being impaired by preventing the layer 3 from being visually recognized through the gap between the layer 3 and the second light shielding layer 5.

  The first reflective layer 2 and the first light shielding layer 3 are formed in a shape having a predetermined pattern such as a character or a picture. At this time, the part in which the first reflective layer 2 and the first light shielding layer 3 are formed may represent a pattern (design) such as a character or a pattern, and the part not formed may represent the background. Conversely, a portion where the first reflective layer 2 and the first light shielding layer 3 are formed may represent the background, and a portion where the first reflective layer 2 and the first light shielding layer 3 are not formed may represent a pattern such as a character or a picture.

  The first light shielding layer 3 is formed in a region having the same size or smaller than that of the first reflective layer 2. When the first light-shielding layer 3 is smaller than the first reflective layer 2, there is a region where the first reflective layer 2 protrudes from the end of the first light-shielding layer 3 when observed from the viewer 10 side. Become. The area where the first reflective layer 2 protrudes from the end of the first light shielding layer 3 is observed as if it is a shadow of the first light shielding layer 3, and the observer 10 feels a three-dimensional effect.

The effect of the three-dimensional effect due to the region where the first reflective layer 2 protrudes from the end of the first light shielding layer 3 is formed by the first light shielding layer 3 or a portion where the first light shielding layer 3 does not exist. When the diameter of the smallest circle that can enclose the symbol is R,
0.0025 × R ≦ L2 ≦ 0.05 × R
It is easy to obtain when the condition is satisfied (see FIG. 3).

FIG. 3 is a plan view of the information display panel 11 of the present invention as viewed from the viewer 10 side, and shows the smallest circle of diameter R that can surround the first light shielding layer 3, the first reflective layer 2, and the pattern layer 3. It is a schematic diagram which shows arrangement | positioning relationship.
In FIG. 3, R is the diameter of the smallest circle that can enclose characters, pictures, and the like formed by the first light shielding layer 3, and the first reflective layer 2 protrudes from the end of the first light shielding layer 3. The maximum value of the width of the portion is L2.

In the case of 0.0025 × R ≦ L2, since the region where the end portion of the first reflective layer 2 protrudes is too small, it is not recognized as a shadow of the first light shielding layer 3 and a stereoscopic effect cannot be obtained.
In the case of L2 ≦ 0.05 × R, the protruding portion of the first reflective layer 2 is not a shadow of the first light shielding layer 3, but is a character / character different from the first light shielding layer 3. Since it is recognized as a picture, not only a three-dimensional effect cannot be obtained, but also the overall appearance of the information display panel 11 is impaired.

The second reflective layer 4 is provided on the other surface (the surface on the light source 9 side) of the light transmissive support 1.
The second reflective layer 4 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  The second reflective layer 4 has an opening 4 a in a portion located in front of the light source 9. The second light shielding layer 5 has an opening 5 a in a portion that coincides with the opening 4 a of the second reflective layer 4 in the extending direction of both surfaces of the light-transmissive support 1. The first light-shielding layer 3 is disposed in portions corresponding to the openings 4a and 5a in the extending direction of both surfaces of the light-transmissive support 1, and the second reflective layer 4 and the second reflective layer 4 The light shielding layer 5 is partially overlapped. Basically, the second reflective layer 4 only needs to be disposed in a portion other than the first light-shielding layer 3 in the extending direction of both surfaces of the light-transmissive support 1. However, since the second reflective layer 4 is light transmissive as will be described later, light passing through the opening 5a of the second light shielding layer 5 to the light transmissive support 1 and the first reflective layer 2 is transmitted. In order to achieve this, the second reflective layer 4 may be disposed also in a portion corresponding to the first light shielding layer 3.

  The second reflective layer 4 is preferably made of transparent ink added with silica or the like. However, the second reflective layer 4 is not limited to this as long as it has light transmittance and a light diffuse reflection effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, a reflective effect will come out easily.

  A second light shielding layer 5 is provided on the other surface of the light transmissive support 1. The second light shielding layer 5 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  As described above, the opening 5a of the second light shielding layer 5 has a pattern substantially the same shape as the portion where the first light shielding layer 3 is formed, and the both surfaces of the light transmissive support 1 are extended. In the direction, the first light-shielding layer 3 is provided so as to be aligned with the same position.

  Although it is desirable to use black ink for the second light-shielding layer 5, it is not limited to black ink as long as it has a light-shielding effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, the light-shielding effect will come out easily.

  After stacking the second light shielding layer 5 on the other surface of the light transmissive support 1, at least a portion corresponding to the opening 5a of the second light shielding layer 5 in the extending direction of both surfaces of the light transmissive support 1 The light-transmitting colored layer 6 is disposed on the surface. The light transmissive colored layer 6 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  Although it is desirable to use blue ink for the light-transmitting colored layer 6, the present invention is not limited to this as long as it is light transmission with an arbitrary chromatic color. As will be described later, the color of light observed as indirect light and direct light on the outer periphery of the character / pattern depends on the light-transmitting colored layer 6. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, a coloring effect will come out easily. In addition, if the indirect light and direct light of the outer periphery of a character and a pattern are not colored and the color of the light source 9 may be used as it is, it is not necessary to provide the light transmissive colored layer 6.

  After laminating the first light-shielding layer 3 on one surface of the light transmissive support 1, the surface coat layer 7 is disposed on the entire surface of the light transmissive support 1 so as to be positioned on the outermost side on the one surface side. . The surface coat layer 7 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  The surface coat layer 7 is preferably made of transparent ink added with silica or the like. However, the surface coat layer 7 is not limited to this as long as it has light transmissivity, diffuse light reflectivity, and surface hardness enhancing effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, the above-mentioned effect will come out easily. Since the surface coat layer 7 has diffuse reflectivity, there is an effect of suppressing glare due to surface reflection of the exposed portion of the light transmissive support 1 on which no layer is laminated on one side of the light transmissive support 1. In addition, since it has optical transparency, the overall appearance of the information display panel 11 is not greatly affected. Moreover, since surface hardness is strengthened, there exists an effect which prevents the damage | wound in the one surface side of the transparent support body 1 in a process. If these effects are not necessary, the surface coat layer 7 need not be provided.

  After the light-transmitting colored layer 6 on the other surface of the light-transmitting support 1 is laminated, the back coat layer 8 is disposed on the entire surface of the light-transmitting support 1 so as to be located on the outermost side on the other surface side. . The back coat layer 8 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  Although it is desirable to use the back coat layer 8 in which silica or the like is added to a transparent ink, it is not limited to this as long as it has a light transmittance and a surface hardness enhancing effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, the above-mentioned effect will come out easily. Since the back surface coating layer 8 reinforces the surface hardness, it has an effect of preventing scratches on the other surface side of the light transmissive support 1 in the process, and has light transmissivity, so that information is displayed from the light source 9. The light incident on the other surface side of the panel 11 is not greatly affected. In addition, when these effects are not necessary, it is not necessary to provide the back surface coating layer 8.

  When the light source 9 is not turned on, characters / pictures are displayed by the first reflective layer 2 and the first light-shielding layer 3, and the light-transmissive second reflective layer 4 is used as a base portion without the characters / pictures. Then, the second light shielding layer 5 is observed.

  FIG. 4 is a plan view of the information display panel 11 of the present embodiment as viewed from the viewer 10 side when the light source 9 is turned on, and shows the outer periphery of the first light-shielding layer 3, the second reflective layer 4, and the character / pattern. It is a schematic diagram which shows the arrangement | positioning relationship of the indirect light.

  When the light source 9 shown in FIG. 1 is turned on, light is shielded by the second light-shielding layer 5 in the region where the second light-shielding layer 5 is formed, and in the region where the first light-shielding layer 3 is formed. Most of the direct light does not reach the viewer 10 side because it is shielded by one light shielding layer 3. On the other hand, light of an arbitrary color that has passed through the light-transmitting colored layer 6 passes through the opening 5a on the second light-shielding layer 5 side, is diffusely reflected by the first reflective layer 2, and the light is second-reflected. It is diffusely reflected by the layer 4. Thereby, it is visually recognized that indirect light 12 of any color as shown in FIG. 4 spreads on the outer periphery of the character / pattern formed by the first reflective layer 2 and the first light shielding layer 3.・ Beautiful display is possible by observing the pattern in three dimensions.

  When the light source 9 is turned on, as shown in FIG. 1, when the width of the portion where the first light shielding layer 3 and the second light shielding layer 5 overlap is L1, and the thickness of the light transmissive support 1 is T1, When 0 ≦ L1 ≦ 5 × T1 holds, characters and patterns are easily observed in three dimensions.

  When L1 ≦ 0, the end of the first light-shielding layer 3 and the end of the second light-shielding layer 5 do not overlap with each other. Except when the gap at the end of the light shielding layer 5 is closed (see the second embodiment), the light passes through the back coat layer 9, the light transmissive colored layer 6, the light transmissive support 1, and the surface coat layer 7. Since direct light is observed, the visibility of the indirect light 12 on the outer periphery of the character / picture is lowered, and the stereoscopic effect of the character / picture is impaired.

  When L1 ≧ 5 × T1, most of the portion of the indirect light 12 on the outer periphery of the character / pattern is blocked by the first light-shielding layer 3, so that the three-dimensional effect of the character / picture is impaired.

FIG. 2 shows a sectional view of the information display panel 31 according to the second embodiment of the present invention.
In the information display panel 31, the first reflective layer 22, the first light-shielding phase 23, and the surface coat layer 27 are sequentially laminated on one surface side of the light transmissive support 21, and the other side of the light transmissive support 21. A second reflective layer 24, a second light shielding layer 25, a light-transmitting colored layer 26, and a back coat layer 28 are laminated on the surface side. A light source 29 is disposed on the other surface side of the light transmissive support 1 and is viewed from the viewer 30 side.

The first reflective layer 22 and the first light shielding layer 23 are formed in a shape having a predetermined pattern such as a character or a picture. At this time, the part in which the first reflective layer 22 and the first light shielding layer 23 are formed may represent a pattern (design) such as a character or a picture, and the part that is not formed may represent the background. Conversely, a portion where the first reflective layer 22 and the first light shielding layer 23 are formed may represent the background, and a portion where the first reflective layer 22 and the first light shielding layer 23 are not formed may represent a pattern such as a character or a picture.
The second reflective layer 24 has an opening 24 a in a portion located in front of the light source 29. The second light shielding layer 25 has an opening 25 a at a portion that coincides with the opening 24 a of the second reflective layer 24 in the extending direction of both surfaces of the light transmissive support 21. The first light shielding layer 23 is disposed in a part of the portion corresponding to each of the openings 24a and 25a in the extending direction of both surfaces of the light transmissive support 21, but does not completely overlap. There is a gap between the end of one light shielding layer 23 and the openings 24 a and 25 a of the second reflective layer 24 and the second light shielding layer 25. On the other hand, the first reflective layer 22, the second reflective layer 24, and the second light shielding layer 25 are partially overlapped.
The light transmissive colored layer 26 is positioned at least in a portion corresponding to the openings 24 a and 25 a of the second reflective layer 24 and the second light shielding layer 25 in the extending direction of both surfaces of the light transmissive support 21. Are stacked.
The front coat layer 27 and the back coat layer 28 are sized so as to be located on the outermost sides of the both sides of the light transmissive support 1 with the entire size in the extending direction of both surfaces of the light transmissive support 21. Is done.

The construction methods and materials of the first reflective layer 22 and the first light shielding layer 23 are the same as those of the first reflective layer 2 and the first light shielding layer 3 in the first embodiment described above.
The first light shielding layer 23 has an effect of shielding the incident direct light after passing through the light transmissive colored layer 26, the light transmissive support 21, and the first reflective layer 22 when the light source 29 is turned on. However, since there is a gap between the end portion of the first light shielding layer 23 and the end portion of the second light shielding layer 25, the direct light at that portion cannot be shielded.
However, since the end portion of the first reflective layer 22 overlaps the end portion of the second light shielding layer 25, the strong direct light transmitted through the back coat layer 28, the light transmissive colored layer 26, and the light transmissive support 21. Light is observed to be weakened by passing through the first reflective layer 22.

  The construction method, material, and effect of the second reflective layer 24 are the same as those of the second reflective layer 4 of the first embodiment described above.

  The construction method, material, and effect of the second light shielding layer 25 are the same as those of the second light shielding layer 5 of the first embodiment described above.

  The construction method, material, and effect of the light transmissive colored layer 26 are the same as those of the light transmissive colored layer 6 of the first embodiment.

  The construction method, material, and effect of the surface coat layer 27 are the same as those of the surface coat layer 7 of the first embodiment described above.

  The method, material, and effect of the back coat layer 28 are the same as those of the back coat layer 8 of the first embodiment described above.

  When the light source 29 is not turned on, characters / pictures are displayed by the first reflective layer 22 and the first light-shielding layer 23, and the light-transmissive second reflective layer 24 is used as a base portion without the characters / pictures. Then, the second light shielding layer 25 is observed.

  FIG. 5 is a plan view of the information display panel 31 of the present embodiment as viewed from the viewer 30 side when the light source 29 is turned on. The first reflective layer 22, the first light shielding layer 23, and the second reflective layer 24 are shown in FIG. FIG. 5 is a schematic diagram showing an arrangement relationship of indirect light 32 on the outer periphery of the character / picture and direct light 33 on the outer periphery of the character / picture.

When the light source 29 shown in FIG. 2 is turned on, light is shielded by the second light-shielding layer 25 in the region where the second light-shielding layer 25 is formed, and in the region where the first light-shielding layer 23 is formed. Most of the direct light 33 does not reach the viewer 30 side because it is shielded by one light shielding layer 23.
The light transmitted through the light-transmitting colored layer 26 passes through the opening 25a on the second light shielding layer 25 side, is diffusely reflected by the first reflective layer 22, and the light is diffused by the second reflective layer 24. Reflected. As a result, indirect light 32 of any color as shown in FIG. 5 is placed outside the character / picture area on the outer periphery of the character / picture area formed by the first reflective layer 22 and the first light shielding layer 23. As you can see, it spreads in a gradation from bright to dark.
On the other hand, since there is a gap between the end portion of the first light shielding layer 23 and the end portion of the second light shielding layer 25 as described above, the direct light 33 is visually recognized at the end portion of the first reflective layer 22. The direct light 33 overlaps with the indirect light 32 described above at the outer periphery of the character / picture area. However, since the direct light 33 is sufficiently weakened by being transmitted through the first reflective layer 22, the indirect light 32. The brightness of the bright part of the image is only slightly increased, and the characters and pictures are displayed beautifully in three dimensions.

When the light source 29 is turned on, characters and pictures are easily displayed beautifully under the following conditions.
That is, the distance between the end portion of the first light shielding layer 23 and the end portion of the second light shielding layer 25 is L3, and the end portion of the first reflective layer 22 protrudes from the end portion of the first light shielding layer. Is L4, the thickness of the light transmissive support 21 is T1, and the diameter of the smallest circle that can surround the pattern formed by the first light shielding layer 23 or the portion where the first light shielding layer 23 does not exist is R. When
L3 ≦ 2 × T1 (3)
L3 ≦ L4 (4)
L4 ≦ 0.05 × R (5)
When the above conditions are satisfied, the characters and designs are easy to display beautifully.

  In the case of L3 ≧ 2 × T1, since the range in which the direct light 33 is visually recognized at the outer periphery of the character / pattern is too wide, the character / picture cannot be displayed three-dimensionally due to the gradation of the indirect light 32.

  In the case of L3 ≧ L4, since the direct light 33 with high luminance that does not pass through the first reflective layer 22 is visually recognized, the indirect light 32 with low luminance becomes difficult to visually recognize, and the characters and designs can be shown in three dimensions. Can not.

  In the case of L4 ≧ 0.05 × R, as in the case of the first embodiment, the protruding portion of the first reflective layer 22 is not the shadow of the first light shielding layer 23 but the first light shielding layer. Since it is recognized as a character / pattern different from the layer 23, the appearance of the character / picture is impaired.

  As the light sources 9 and 29 disposed on the back surfaces of the information display panels 11 and 31 of the first and second embodiments described above, various lamps (various bulb lamps, LED light sources) and surface light sources can be used. In particular, the surface light source consisting of an edge light type light source and a light guide plate guides the light guided from a linear light source such as a cold cathode tube into the light guide plate such as acrylic to the entire surface of the light guide plate using total reflection in the light guide plate. By using the fact that the light hitting the reflection dots attached by the light changes its path and the light with an angle smaller than the total reflection angle emerges from the surface of the light guide plate, the entire surface of the light guide plate can be illuminated uniformly. It is a thing. When such a surface light source is used as the light sources 9 and 29 arranged on the back surfaces of the information display panels 11 and 31, the entire information display panels 11 and 31 can be illuminated uniformly, and the observers 10 and 30 There is an advantage that it is easy to read.

In the information display panel 11 of the first embodiment shown in FIG. 1, as shown in FIG. 3, the first reflective layer 2 is provided outside the left end portion and the lower end portion of the first light shielding layer 3. Although the case where there is a protruding area is shown, the area where the first reflective layer 2 protrudes may be on either side of the first light shielding layer 3.
For example, the first light-shielding layer 3 in each area of the information display panel 11 does not have an area where the first reflective layer 2 protrudes at the end near the center of the information display panel 11. You may make it the setting that there exists an area | region where the 1st reflection layer 2 protrudes in the edge part near the peripheral part. Alternatively, when the first light-shielding layer 3 which is on the upper side is incorporated in the information display device and mounted on the transportation device, the end portion of the first light-shielding layer 3 does not have a region protruding from the first side. It may be set that there is a region where the first reflective layer 2 protrudes at the end of the light shielding layer 3.
Such a positional relationship can be similarly applied to the positional relationship between the first reflective layer 22 and the first light shielding layer 23 in the information display panel 31 of the second embodiment shown in FIG.

Example 1 of the present invention will be specifically described. Example 1 shows an example of the information display panel 11 of the first embodiment shown in FIG.
A polycarbonate having a thickness of 0.5 mm is used as the light-transmitting support 1, and the first reflective layer 2 of white ink, the first light-shielding layer 3 of black ink are screen-printed on one side, and silica is applied to the transparent ink. A second reflective layer 4 in which silica is added to transparent ink at a position where the added surface coat layer 7 is formed and reversed to the first light-shielding layer 3 by screen printing on the other surface, a second light-shielding layer of black ink 5. A light-transmitting colored layer 6 of blue ink and a back coat layer 8 in which silica was added to transparent ink were formed. In this example, the first reflective layer 2 and the first light shielding layer 3 were formed in the shape of characters, and the second reflective layer 4 and the second light shielding layer 5 were formed as background portions.

With the above configuration, when the diffuse reflectance of the second reflective layer 4 is Rt1 and the total light transmittance is Tt1, the evaluation result of the stereoscopic effect of the characters when the light source 9 is turned on and the characters other than the characters when the light source 9 is not turned on Table 1 shows the evaluation results of the appearance of the ground portion. The first reflective layer 2 has a diffuse reflectance of 70%, the first light shielding layer 3 has a total light transmittance of 0%, the second light shielding layer 5 has a total light transmittance of 0%, and the first light shielding layer 3. L1 = 0, where L1 is the width of the overlapping portion of the second light-shielding layer 5 and the end of the second light-shielding layer 5, and the end of the first reflective layer 2 extends from the end of the first light-shielding layer 3. It is assumed that L2 = 0 holds when the width of the protruding portion is L2.
In the evaluation of stereoscopic effect and appearance, a 1000 cd / m ² LED light source was placed on the other surface side of the information display panel 11 of this example and observed from a distance of 1 m. Evaluation was performed by visual sensory evaluation in five stages of 1 to 5 (good = 5, bad = 1). Each evaluation is 3 or more and passed.

From the results shown in Table 1, it was found that the total light transmittance Tt1 of the second reflective layer 4 needs to be 50% or more in order to obtain a sufficiently good appearance when the light source 9 is not lit.
If the total light transmittance Tt1 of the second reflective layer 4 is 50% or less, the external light cannot pass through the second reflective layer 4 and therefore the second light shielding layer cannot be sufficiently visually recognized.
Also, it was found that the diffuse reflectance Rt1 of the second reflective layer 4 is in the range of 10% to 40% so that the stereoscopic effect of the characters when the light source 9 is lit is sufficient.
Even if the diffuse reflectance Rt1 is 40% or more, it is presumed that the three-dimensional effect of the letters is sufficient, but the evaluation of 40% or more was not performed due to the balance with the total light transmittance Tt1 (diffuse reflectance Rt1 and total light Since even if the transmittance Tt1 is added, it does not exceed 100%, the evaluation is not performed even when the total light transmittance Tt1 is 10% or less.

  In the configuration of FIG. 1, the width of the overlapping portion between the end of the first light shielding layer 3 and the end of the second light shielding layer 5 is L1, and the thickness of the light transmissive support 11 is T1 with respect to L1. Table 2 shows the evaluation results of the stereoscopic effect of the characters when the light source 9 is turned on. When L1 is 0 or less, the end of the first light shielding layer 3 and the end of the second light shielding layer 5 do not overlap, and L1 is the end of the first light shielding layer 3 and the second light shielding layer. It is assumed that the gap at the end of 5 is represented.

In the above, the diffuse reflectance of the first reflective layer 2 is 70%, the total light transmittance of the first light shielding layer 3 is 0%, and the diffuse reflectance and total light transmittance of the second reflective layer 4 are 40%, respectively. % And 50%, the total light transmittance of the second light shielding layer 5 is 0%, and the width of the portion where the end of the first reflective layer 2 protrudes from the end of the first light shielding layer 3 is L2. Assume that L2 = 0 holds.
In the evaluation of the stereoscopic effect, an LED light source of 1000 cd / m ² was placed on the other surface side of the information display panel 11 of the present invention and observed from a distance of 1 m. Evaluation was performed by visual sensory evaluation in five stages of 1 to 5 (good = 5, bad = 1). Each evaluation is 3 or more and passed.

From the results shown in Table 2, it was found that 0 ≦ L1 ≦ 5 × T1 was necessary to obtain sufficient character stereoscopic effect when the light source 9 was turned on.
When L1 ≦ 0, direct light with high luminance can be seen from the gap between the end of the first light-shielding layer 3 and the end of the second light-shielding layer 5, and indirect light spreading around the character cannot be seen, so that the character is It was not possible to observe stereoscopically.
On the other hand, when L1 ≧ 5 × T1, indirect light spreading around the character cannot be visually recognized, and the character cannot be observed stereoscopically. This is because the distance between the end of the light entering the first reflective layer 2 through the opening 5a of the second light-shielding layer 5 and the end of the first reflective layer 2 (first light-shielding layer 3) is large. This is considered to be because the light (indirect light) diffusely reflected by the first reflective layer 2 did not reach the outer periphery of the first light shielding layer 3 sufficiently.

  In the configuration of FIG. 1, the width of the portion where the end portion of the first reflective layer 2 protrudes from the end portion of the first light shielding layer 3 is L2, and the first light shielding layer 2 or the first light shielding layer 3 does not exist. Table 3 shows the evaluation results of the three-dimensional effect of characters when the light source 9 is not lit with respect to L2, where R is the diameter of the smallest circle that can surround the symbol formed by the portion (see FIG. 3).

In the above, the diffuse reflectance of the first reflective layer 2 is 70%, the total light transmittance of the first light shielding layer 3 is 0%, and the diffuse reflectance and total light transmittance of the second reflective layer 4 are 40%, respectively. % And 50%, the total light transmittance of the second light-shielding layer 5 is 0%, and the width of the overlapping portion between the end of the first light-shielding layer 3 and the end of the second light-shielding layer 5 is L1. Assume that L1 = 0 holds.
In the evaluation of the three-dimensional effect, the information display panel 11 of this example was observed from a distance of 1 m on one surface side. Evaluation was performed by visual sensory evaluation in five stages of 1 to 5 (good = 5, bad = 1). Each evaluation is 3 or more and passed.

From the results shown in Table 3, it was found that 0.0025 × R ≦ L2 ≦ 0.05 × R is necessary to obtain a sufficient character stereoscopic effect when the light source 9 is not lit.
When L2 ≦ 0.0025 × R, the portion where the end of the first reflective layer 2 protrudes from the end of the first light-shielding layer 3 was too narrow, and the characters did not have a three-dimensional effect.
On the other hand, when L2 ≧ 0.05 × R, the portion where the end of the first reflective layer 2 protrudes from the end of the first light-shielding layer 3 is too wide, so that the first light-shielding layer 3 and the first reflective layer 2 The character seemed to represent a different pattern, but the characters did not feel three-dimensional.

By using the information display panel 11 produced in the first embodiment, when the light source 9 disposed behind the information display panel 11 is turned on, an effect of indirect light leaking from the outer peripheral portion of the character / picture is produced and the light source 9 is not turned on. It was possible to provide an information display panel 11 that can visually recognize a base portion having no characters or patterns in dark color when lit.
When the diffuse reflectance of the first reflective layer 2 is less than 20%, it is incident and diffusely reflected, and the luminance of the indirect light visually recognized at the outer peripheral portion of the first reflective layer 2 is insufficient. The three-dimensional effect is not seen.
Furthermore, in the information display panel 11 of the present embodiment, the total light transmittance of the first light shielding layer 3 is preferably 0% or more and 20% or less. If the total light transmittance of the first light-shielding layer 3 is 20% or more, the direct light from the light source is not sufficiently concealed, the visibility of indirect light leaking to the outer periphery is lowered, and the three-dimensional effect of the characters is lowered. .
In the information display panel 11 of the present embodiment, the total light transmittance of the second light shielding layer 5 is preferably 0% or more and 20% or less. When the total light transmittance of the second light shielding layer 5 is 20% or more, the direct light from the light source is not sufficiently concealed, and the luminance of the direct light visually recognized by the second reflective layer 4 is increased. The visibility of the indirect light that diffuses and reflects from the first reflective layer to the reflective layer 4 decreases, and the three-dimensional effect of the characters decreases.
Furthermore, in the information display panel 11 of the present embodiment, the total light transmittance of the surface coat layer 7 is preferably 70% or more. If the total light transmittance of the surface coat layer 7 is 70% or less, the external light cannot be sufficiently transmitted when the light source is not turned on, so that the visibility of the information display panel 11 is deteriorated. Direct light and indirect light cannot be sufficiently transmitted, and the visibility of the information display panel is lowered.
Further, the diffuse reflectance of the surface coat layer 7 is preferably 5% or more and 30% or less. If the diffuse reflectance of the surface coat layer 7 is 5% or less, glare occurs on the viewer side of the light-transmitting support where nothing is laminated under the surface coat layer, and the information display panel If the diffuse reflectance is 30% or more, external light is diffused and the visibility of the information display panel is lowered.
Furthermore, the strength of the surface coat layer 7 is preferably a pencil strength of HB or higher. If the surface coat layer 7 has a pencil strength of HB or less, scratches due to rubbing are likely to occur in the process.
In the information display panel 11 of the present embodiment, the total light transmittance of the back coat layer 8 is preferably 70% or more. If the total light transmittance of the back coat layer 8 is 70% or less, direct light from the light source cannot be sufficiently transmitted, and the visibility of the information display panel is lowered.
Furthermore, it is preferable that the intensity | strength of the back surface coating layer 8 is HB or more by pencil strength. If the back coat layer 8 has a pencil strength of HB or less, scratches due to rubbing tend to occur in the process.

  The information display panel 11 produced in Example 1 was incorporated into an information display device and used for a transportation device. The structure of the transportation equipment is generally used. Even when used in transportation equipment, the effect obtained by the information display panel 11 could be obtained as it was.

Example 2 of the present invention will be specifically described. Example 2 shows an example of the information display panel 31 of the second embodiment shown in FIG.
A polycarbonate with a thickness of 0.5 mm is used as the light transmissive support 21, and a white ink first reflective layer 22, a black ink first light-shielding layer 23, and a transparent ink with silica on one surface thereof by screen printing. A second reflective layer 24 in which silica is added to transparent ink at a position where the added surface coat layer 27 is formed and reversed to the first light shielding layer 23 by screen printing on the other surface, a second light shielding layer of black ink 25, a light-transmitting colored layer 26 of blue ink, and a back coat layer 28 in which silica was added to transparent ink. In the present embodiment, the first reflective layer 22 and the first light shielding layer 23 are formed in a character shape, and the second reflective layer 24 and the second light shielding layer 25 are formed as a background portion.

In the configuration of FIG. 2, when the distance between the end of the first light-shielding layer 23 and the end of the second light-shielding layer 25 is L3 and the thickness of the light-transmissive support 21 is T1, the light source 29 is turned on for L3. Table 4 shows the stereoscopic effect of the characters at the time.
As shown in FIG. 2, the end of the first light-shielding layer 23 and the end of the second light-shielding layer 25 do not overlap, and the end of the first reflective layer 22 and the second light-shielding layer are not overlapped. Assume that the ends of the layer 25 overlap.

In the above description, the diffuse reflectance of the first reflective layer 22 is 70%, the total light transmittance of the first light shielding layer 23 is 0%, and the diffuse reflectance and total light transmittance of the second reflective layer 24 are 40%, respectively. % And 50%, the total light transmittance of the second light shielding layer 25 is 0%, and the width of the portion where the end of the first reflective layer 22 protrudes from the end of the first light shielding layer 23 is L4. Assume that L4 = L3 holds.
In addition, as in Example 1, when the diameter R of the minimum circle that can surround the design formed by the first light shielding layer 23 or the portion where the first light shielding layer 23 does not exist, L4 is too large. Since the appearance of characters when the light source 29 is not lit is impaired, L4 ≦ 0.05 × R.
In the evaluation of the three-dimensional effect, an LED light source of 1000 cd / m ² was placed on the other surface side of the information display panel 31 of this example and observed from a distance of 1 m. Evaluation was performed by visual sensory evaluation in five stages of 1 to 5 (good = 5, bad = 1). Each evaluation is 3 or more and passed.

From the results shown in Table 4, it was found that L3 ≦ 2 × T1 was necessary to obtain sufficient character stereoscopic effect when the light source 29 was turned on.
When L3 ≧ 2 × T1, indirect light spreading around the character could not be visually recognized, and the character could not be observed stereoscopically. This is because direct light transmitted through the first reflective layer 22 is observed, but the end of the light incident on the first reflective layer 22 through the opening 25a of the second light shielding layer 25 and the first This is probably because the distance between the end portions of the light shielding layer 23 becomes too large, and the light (indirect light) diffusely reflected by the first reflective layer 22 did not reach the outer periphery of the first reflective layer 22 sufficiently.

By using the information display panel 31 produced in the second embodiment, when the light source 29 disposed behind the information display panel 31 is turned on, the effect of indirect light leaking from the outer periphery of the character / pattern, or the indirect light and direct light It is possible to provide an information display panel 31 that can produce an effect combining the above and can visually recognize a background portion having no characters or designs in dark color when the light source 29 is not lit.
In the information display panel 31 of this embodiment, the diffuse reflectance of the first reflective layer 22 is preferably 20% or more and 90% or less. When the diffuse reflectance of the first reflective layer 22 is less than 20%, it is incident and diffusely reflected, and the luminance of the indirect light visible on the outer periphery of the first reflective layer 2 is not sufficient, which is sufficient for characters There is no stereoscopic effect.
Furthermore, in the information display panel 31 of the present embodiment, the total light transmittance of the first light shielding layer 23 is preferably 0% or more and 20% or less. If the total light transmittance of the first light shielding layer 23 is 20% or more, the direct light from the light source is not sufficiently concealed, the visibility of the indirect light leaking to the outer periphery is lowered, and the three-dimensional effect of the characters is lowered. .
In the information display panel 31 of the present embodiment, the total light transmittance of the second reflective layer 24 is preferably 50% or more and 90% or less. When the total light transmittance of the second reflective layer 24 is 50% or less, the transmission of outside light is insufficient, and the visibility of the second light-shielding layer 25 when the light source is not turned on decreases, and the total light transmission is achieved. When the rate is 90% or more, the light diffusely reflected when the light source is turned on decreases, and the brightness of the indirect light is lowered, so that the stereoscopic effect is impaired.
Further, the diffuse reflectance of the second reflective layer 24 is preferably 10% or more and 40% or less. Although it is estimated that the diffuse reflectance of the second reflective layer 24 may be 40% or more, evaluation of 40% or more was not performed due to the balance with the total light transmittance of the second reflective layer 24 (second). Even if the diffuse reflectance and the total light transmittance of the reflective layer 24 are not added, it does not exceed 100%. Therefore, the evaluation is not performed even when the total light transmittance of the second reflective layer 24 is 10% or less.) .
In the information display panel 31 of the present embodiment, the total light transmittance of the second light shielding layer 25 is preferably 0% or more and 20% or less. When the total light transmittance of the second light shielding layer 25 is 20% or more, the direct light from the light source is not sufficiently concealed, and the luminance of the direct light visually recognized by the second reflective layer 4 is increased. The visibility of the indirect light that diffuses and reflects from the first reflective layer to the reflective layer 4 decreases, and the three-dimensional effect of the characters decreases.
Furthermore, in the information display panel 31 of the present embodiment, the total light transmittance of the surface coat layer 27 is preferably 70% or more. When the total light transmittance of the surface coat layer 27 is 70% or less, since the external light cannot be sufficiently transmitted when the light source is not turned on, the visibility of the information display panel 11 is deteriorated. Direct light and indirect light cannot be sufficiently transmitted, and the visibility of the information display panel is lowered.
Further, the diffuse reflectance of the surface coat layer 27 is preferably 5% or more and 30% or less. When the diffuse reflectance of the surface coat layer 27 is 5% or less, glare occurs on the viewer side of the light transmissive support where nothing is laminated under the surface coat layer, and the information display panel If the diffuse reflectance is 30% or more, external light is diffused and the visibility of the information display panel is lowered.
Further, the surface coat layer 27 preferably has a pencil strength of HB or higher. If the surface coat layer 27 has a pencil strength of HB or less, scratches due to rubbing are likely to occur in the process.
In the information display panel 31 of the present embodiment, the total light transmittance of the back coat layer 28 is preferably 70% or more. If the total light transmittance of the back coat layer 28 is 70% or less, direct light from the light source cannot be sufficiently transmitted, and the visibility of the information display panel is lowered.
Furthermore, the strength of the back surface coating layer 28 is preferably HB or higher in terms of pencil strength. If the back coat layer 28 has a pencil strength of HB or less, scratches due to rubbing are likely to occur in the process.

  The information display panel 31 produced in Example 2 was incorporated into an information display device and used for a transportation device. The structure of the transportation equipment is generally used. Even when used in transportation equipment, the effect obtained by the information display panel 31 could be obtained as it was.

1, 21 Light transmissive support 2, 22 First reflection layer 3, 23 First light shielding layer 4, 24 Second reflection layer 4 a, 5 a, 24 a, 25 a Opening 5, 25 Second light shielding layer 6 , 26 Light transmissive colored layer 7, 27 Surface coat layer 8, 28 Back coat layer 9, 29 Light source 10, 30 Observer 11, 31 Information display panel 12, 32 Indirect light 33 Direct light

Claims (22)

An information display panel illuminated from the back by a light source,
A light-transmissive support, a first reflective layer and a first light-shielding layer, which are sequentially laminated on one surface side of the light-transmissive support located on the viewer side of the information display panel, and the light transmission A second reflective layer and a second light-shielding layer, which are sequentially laminated on the other surface side located on the light source side of the conductive support,
In the extending direction of the one surface and the other surface, the first reflective layer is arranged in a size including a region corresponding to the position of the opening provided in the second light shielding layer. ,
The first light-shielding layer is formed smaller than the first reflective layer so as to expose a part of an end of the first reflective layer to the viewer side;
The diffuse reflectance of the second reflective layer is configured to be lower than the diffuse reflectance of the first reflective layer.
An information display panel characterized by that.   The information display panel according to claim 1, wherein the second reflective layer has a diffuse reflectance of 10% to 40%. The first light-shielding layer and the second light-shielding layer partially overlap in the extending direction, and the width in the extending direction of the overlapping portion of the first light-shielding layer and the second light-shielding layer L1, and when the thickness of the light transmissive support in the stacking direction of the layers relative to the surfaces is T1,
0 ≦ L1 ≦ 5 × T1
The information display panel according to claim 1, wherein: The first reflective layer is formed larger than the first light shielding layer in the extending direction, and an end of the first reflective layer extends from an end of the first light shielding layer in the extending direction. When the width of the protruding portion is L2, and the diameter of the smallest circle that can surround the design displayed using the first light shielding layer is R,
0.0025 × R ≦ L2 ≦ 0.05 × R
The information display panel according to claim 1, wherein: The first light shielding layer and the second light shielding layer do not overlap in the extending direction, and the first reflective layer and the second light shielding layer partially overlap in the extending direction. The distance between the end of the first light-shielding layer and the end of the second light-shielding layer in the extending direction is L3, and the extension of the portion where the first light-shielding layer and the first reflective layer overlap with each other. The width in the present direction is L4, the thickness of the light transmissive support in the stacking direction of the layers with respect to the surfaces is T1, and the diameter of the smallest circle that can surround the design displayed using the first light shielding layer is R. When
L3 ≦ 2 × T1
L3 ≦ L4
L4 ≦ 0.05 × R
The information display panel according to claim 1, wherein:   6. The information display panel according to claim 1, wherein the total light transmittance of the second light shielding layer is 0% or more and 20% or less.   The information display panel according to claim 1, wherein the diffuse reflectance of the first reflective layer is 20% or more and 90% or less.   The information display panel according to claim 1, wherein the total light transmittance of the first reflective layer is 10% or more and 80% or less.   9. The information display panel according to claim 1, wherein the total light transmittance of the first light shielding layer is 0% or more and 20% or less.   The second light-shielding layer has an opening, and a chromatic light-transmitting coloring with a total light transmittance of 50% or more so as to be located in a portion corresponding to the opening in the extending direction. The information display panel according to claim 1, wherein a layer is further laminated on the light source side of the second light shielding layer.   A surface coat layer is further laminated on the viewer side of the first light shielding layer in a size corresponding to the whole of the one surface in the extending direction, and the surface coat layer has a total light transmittance. The information display panel according to claim 1, wherein the information display panel is 70% or more.   The information display panel according to claim 11, wherein the surface coat layer has a diffuse reflectance of 5% to 30%.   The information display panel according to claim 11, wherein the surface coat layer has a pencil hardness of HB or more.   A back coat layer having a size corresponding to the whole of the other face in the extending direction is further laminated on the most light source side of the other face, and the back coat layer has a total light transmittance of 70%. The information display panel according to claim 1, wherein the information display panel is as described above.   15. The information display panel according to claim 14, wherein the back coat layer has a pencil hardness of HB or more.   The light-transmitting support is a resin selected from polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile / styrene copolymer. The information display panel according to claim 1.   16. The information display panel according to claim 1, wherein the light transmissive support is a resin having a haze value of 12% or more and 92% or less.   The light transmissive support includes a light transmissive layer and a light diffusing layer, and the light transmissive layer is polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile. The information display panel according to any one of claims 1 to 15, wherein the information display panel is any resin of a styrene copolymer, and the light diffusion layer is a resin having a haze value of 12% or more and 92% or less. .   19. The information display panel according to claim 1, wherein a thickness of the light transmissive support is in a range from 0.05 mm to 5 mm.   The information display panel according to claim 1, wherein the light source is a surface light source including an edge light type light source and a light guide plate.   The information display panel according to claim 1, wherein the light source is an LED light source.   A transportation device comprising the information display panel according to any one of claims 1 to 21.

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